/* ── 归档页容器 ── */
.arc-wrap { max-width: 1200px; margin: 0 auto; padding: 0 0 40px; width: 100%; }

/* 让框架主容器背景透明，背景由各子区块自己控制 */
body:has(.arc-wrap) .child-page__main {
    background: transparent !important;
    box-shadow: none !important;
    border-radius: 0 !important;
    padding: 0 !important;
    margin-bottom: 0 !important;
}
/* 去掉 child-page 底部内边距，让内容区充充占满 page-container */
body:has(.arc-wrap) .child-page {
    padding-bottom: 0;
}

/* ── 顶部 Banner ── */
.arc-banner {
    position: relative;
    border-radius: 12px 12px 0 0;
    overflow: hidden;
    margin-bottom: 0;
    height: 160px;
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    display: flex;
    align-items: flex-end;
    padding: 24px 28px;
}
.arc-banner-text h1 {
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    margin: 0 0 4px;
}
.arc-banner-text p {
    font-size: 13px;
    color: rgba(255,255,255,.7);
    margin: 0;
}

/* ── 统计栏 ── */
.arc-stats {
    display: flex;
    background: var(--bg-card, #fff);
    border-radius: 0 0 12px 12px;
    border: 1px solid var(--border-primary, #e2e8f0);
    border-top: none;
    margin-bottom: 28px;
    overflow: hidden;
}
.arc-stat {
    flex: 1;
    text-align: center;
    padding: 20px 8px;
}
.arc-stat-label {
    font-size: 16px;
    color: var(--text-primary, #1e293b);
    margin-bottom: 6px;
}
.arc-stat-value {
    font-size: 22px;
    font-weight: 800;
    color: var(--text-primary, #1e293b);
}

/* ── 年份区块 ── */
.arc-year-block { margin-bottom: 20px; }
.arc-year-block:last-child { margin-bottom: 0; }

.arc-year-card {
    background: var(--bg-card, #fff);
    border-radius: 12px;
    border: 1px solid var(--border-primary, #e2e8f0);
    overflow: hidden;
    transition: box-shadow .25s ease, transform .25s ease;
}
.arc-year-card:hover {
    box-shadow: 0 8px 24px rgba(0,0,0,.08);
    transform: translateY(-2px);
}
.arc-year-num {
    font-size: 64px;
    font-weight: 900;
    color: var(--border-primary, #e2e8f0);
    line-height: 1;
    padding: 16px 24px 0;
    user-select: none;
    pointer-events: auto;
    letter-spacing: -2px;
    transition: color .25s ease, transform .25s ease;
    display: inline-block;
    cursor: default;
}
.arc-year-num:hover {
    color: var(--color-link, #3b82f6);
    transform: translateX(8px) scale(1.04);
}
.arc-year-card:hover .arc-year-num {
    color: var(--color-link, #3b82f6);
    transform: translateX(6px);
}
html[data-theme="dark"] .arc-year-num {
    color: rgba(255,255,255,.08);
}
html[data-theme="dark"] .arc-year-num:hover,
html[data-theme="dark"] .arc-year-card:hover .arc-year-num {
    color: rgba(99,153,255,.5);
}
.arc-post-list {
    padding: 4px 24px 20px;
    list-style: none;
    margin: 0;
}
.arc-post-item {
    display: flex;
    align-items: baseline;
    gap: 12px;
    padding: 7px 0;
    border-bottom: 1px dashed var(--border-primary, #eef1f5);
    transition: padding-left .2s ease;
}
.arc-post-item:hover { padding-left: 6px; }
.arc-post-item:last-child { border-bottom: none; }
.arc-post-date {
    flex-shrink: 0;
    font-size: 13px;
    color: var(--text-tertiary, #94a3b8);
    font-variant-numeric: tabular-nums;
    width: 42px;
}
.arc-post-title {
    font-size: 15px;
    color: var(--text-primary, #1e293b);
    text-decoration: none;
    line-height: 1.5;
    flex: 1;
    min-width: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: color .15s;
}
.arc-post-title:hover { color: var(--color-link, #3b82f6); }

/* ── 空状态 ── */
.arc-empty {
    text-align: center;
    padding: 60px 0;
    color: var(--text-tertiary, #94a3b8);
    font-size: 15px;
}

/* ── 响应式 ── */
@media (max-width: 1024px) {
    .arc-wrap { padding: 0 0 32px; }
}
@media (max-width: 640px) {
    .arc-wrap { padding: 0 0 24px; }
    .arc-banner { height: 120px; padding: 16px 18px; }
    .arc-banner-text h1 { font-size: 17px; }
    .arc-stat-label { font-size: 13px; }
    .arc-stat-value { font-size: 17px; }
    .arc-year-num { font-size: 44px; padding: 12px 16px 0; }
    /* 年份卡片区恢复内边距 */
    .arc-years { padding: 0 12px; }
    .arc-post-list { padding: 4px 16px 16px; }
    .arc-post-title { font-size: 14px; }
    /* 手机端：flex换行，每行3列共两行，显示全部6列 */
    .arc-stats { flex-wrap: wrap; }
    .arc-stat { flex: 0 0 33.333%; padding: 14px 4px; }
    .arc-stat:nth-child(1),
    .arc-stat:nth-child(2),
    .arc-stat:nth-child(3) { border-bottom: 1px solid var(--border-primary, #e2e8f0); }
}
/* 触摸设备（手机+iPad）禁用所有 hover 动效 */
@media (hover: none) {
    .arc-year-num:hover,
    .arc-year-card:hover .arc-year-num {
        color: var(--border-primary, #e2e8f0) !important;
        transform: none !important;
    }
    html[data-theme="dark"] .arc-year-num:hover,
    html[data-theme="dark"] .arc-year-card:hover .arc-year-num {
        color: rgba(255,255,255,.08) !important;
    }
    .arc-year-card:hover {
        box-shadow: none !important;
        transform: none !important;
    }
    .arc-post-item:hover { padding-left: 0 !important; }
}